One IED for a wide range of high impedance differential protection applications
ABB introduces a new, unique and compact solution for high impedance differential protection. The numerical busbar protection REB650 IED (Intelligent Electronic Device) provides its users with a wide variety of application opportunities. Designed primarily for the protection of single busbars with or without sectionalizers in high impedance based applications, it also offers high impedance differential protection for generators, autotransformers, shunt reactors and capacitor banks. Its I/O capability allows you to protect up to three 3-phase high impedance differential protection zones with a single IED.
REB650 ensures fast fault clearance for all types of internal phase-to-phase and phase-to-earth faults in solidly earthed or low impedance earthed power systems. It can also handle all internal multi-phase faults in isolated or high impedance earthed power systems.
REB650 – ease of use from ready-to-use solutions
REB650 offers an optimum ‘off-the-shelf’ ready-made solution for applications requiring high impedance differential protection. The type tested REB650 is delivered equipped and configured with complete protection functionality, and with default parameters for easy handling of products – from ordering, engineering and commissioning to reliable operation.
The 650 series IEDs introduce a number of innovations, such as a significantly reduced number of parameter settings and extended IED HMI functionality, including 15 dynamic threecolor indication LEDs per page, on up to three pages, and configurable push-button shortcuts for different actions. In the 650 series IEDs, most basic parameters are set before delivery from the factory. You only need to set the parameters specific to your application. This allows you to quickly take your IEDs into operation. The application manual includes setting examples to support your protection engineers.
The REB650 IED continues ABB’s strong track record in high impedance differential busbar protection applications, starting from analog relay RADHA and other similar relays from previous generations. To date, these relays have been successfully serving utilities for over 50 years.
Unique functional integration
One REB650 is able to handle several high impedance differential protection zones. For instance, you can use it for one or up to three zones depending on your application. You can also utilize it to combine two main zones and a check zone in a single IED.
Among its top-notch features, REB650 incorporates complementary protection functionality consisting of versatile current and voltage protection functions. These functions can be used independent of the high impedance differential protection. Thus, one REB650 can integrate all protection functionality needed for a bus coupler. If required, the busbar protection operation can be released using the integrated phase undervoltage or residual overvoltage protection functions as an additional tripping criterion.
Relion® – Complete confidence
High impedance differential busbar protection REB650 IEDs belong to the Relion® protection and control product family. The Relion product family offers the widest range of products for the protection, control, measurement and supervision of power systems. To ensure interoperable and future-proof solutions, Relion products have been designed to implement the core values of the IEC 61850 standard. With ABB’s leadingedge technology, global application knowledge and experienced support network, you can be completely confident that your system performs reliably – in any situation.